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Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Jan. 29, 2017 USD ($) Store	Jan. 31, 2016 USD ($)	Feb. 01, 2015 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of stores | Store	629
Inventory obsolescence reserves	$ 13,770,000	$ 9,782,000
Advertising expenses	347,474,000	333,276,000	$ 330,070,000
Asset impairment charges	1,765,000	2,100,000	241,000
Goodwill included in other assets, net	18,680,000	18,703,000
Goodwill impairment	0	0	$ 0
Self-insurance reserves	$ 24,988,000	$ 25,290,000
Period of recognition for gift cards and merchandise credits, years	4 years

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property.

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